Technical Specifications - Velleman K4020 Gebrauchsanweisung

600W MONO/STEREO MOSFET POWER
AMPLIFIER
This audio power amp meets the strictest requirements regarding quality and
solidity. Due to a very special circuit the output stage always sets itself at
CLASS A without any unnecessary loss of power, hence the name
"EFFICIENT CLASS A".
The amp is made up of two completely separated mono amplifiers, resulting in
no crosstalk between channels.
A major advantage of this amplifier kit is that NOT A SINGLE ADJUSTMENT is
required!
Provisions are made to switch the two channels in "bridge", allowing the power
to be doubled (mono).
The amplifier is provided with a short-circuit protection and a thermal
protection. Furthermore, the speakers connected to the amplifier are protected
against switch-on clicks and against D.C. voltages which might occur on the
output.
To visualize the output power two LED power meters (K4021) may be used
(option). For scaling a choice between 4 and 8 ohms is possible; the meters
may be switched in series to obtain a mono indication when using the amplifier
in "bridge".
The amplifier comes complete with heat sinks, transformers and house.

TECHNICAL SPECIFICATIONS

- Music power: 2 x 300W at 4 ohms / 2 x 200W at 8 ohms
- RMS power: 2 x 155W at 4 ohms / 2 x 100W at 8 ohms (1% THD)
- Bridged power: 600 W music power - 300WRMS / 8 ohms
- Harmonic distortion: 0.008% (1W/1kHz) / 0.005% (90W/1kHz/8ohm)
- Damping factor: >600 (at PCB output)
- Input impedance: 47 Kohms
- Input sensitivity: 1VRMS
- Frequency response: 3 - 120kHz (±3dB)
- Power bandwidth: 5 - 50kHz (±1dB)
- Signal-to-noise ratio: 112db A-weighted against full power
- Speaker switch-on delay: ±2 sec.
- D.C. voltage protection of the output: from +1V and -1V
- Short-circuit protection and thermal protection (±95 ° C)
- Efficiency: >70%
- Power consumption: 450W max.
- Dimensions WxHxD: 425 x 90 x 355 mm
Subject to modifications
H4020-ED2-25